This is a simple USB temperature probe that uses the AVR USB library by Objective Development (http://www.obdev.at/avrusb/). It is in large part built upon the EasyLogger example by Christian Starkjohann. Whereas EasyLogger would send the data values over a keyboard interface, this project uses a custom device class and reads values using the ruby-usb library.

My first electronics project of the summer is now finished. Overall, it didn’t take me too long to complete, and I’m very pleased with the results. Watch this video overview and check after the break for all the juicy details.

This project shows how to create an MB Electronics Simon game clone using an 8-pin PIC12F683 microcontroller. The game includes a full emulation of the original Simon ‘game 1′ and the ability to select from 4 skill levels which control the number of colours you must repeat in a sequence in order to win the game.

Jeri (with an I) is back with a new amazing video. This time, she was asked to design a circuit to trigger “artistic” events, when someone approaches. The device had to be inexpensive and small. So Jeri used a PIR sensor to do the job. Watch the following video to see her explaining how these sensors operate and also how can someone use them in a circuit to detect the infrared radiation of our body heat.